Home / 3,125.85-4,313.94-1,947.09

Finding the Fourth Proportional to 3,125.85, 4,313.94 and 1,947.09

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Solution

The fourth proportional to 3,125.85, 4,313.94 and 1,947.09 is: 2,687.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.85 : 4,313.94 = 1,947.09 : x
  2. Step 2: Convert to fraction form
    3,125.85/4,313.94 = 1,947.09/x
  3. Step 3: Cross multiply
    3,125.85x = 4,313.94 × 1,947.09
  4. Step 4: Simplify right side
    3,125.85x = 8,399,629.43
  5. Step 5: Solve for x
    x = 8,399,629.43/3,125.85
  6. Step 6: Final answer
    x = 2,687.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.